#pragma once
#include <iostream>
#include "Protocol.hpp"

class Calculator
{
public:
    Calculator()
    {}
    Response Execute(const Request &req)
    {
        // 我们拿到的都是结构化数据,拿到就相当于类对象
        Response resp;
        switch(req.Oper())
        {
        case '+':
            resp.SetResult(req.X() + req.Y());
            break;
        case '-':
            resp.SetResult(req.X() - req.Y());
            break;
        case '*':
            resp.SetResult(req.X() * req.Y());
            break;
        case '/':
        {
            if(req.Y() == 0) {
                resp.SetCode(1); // 1 就是除0
            }
            else{
                resp.SetResult(req.X() / req.Y());
            }
        }
            break;
        case '%':
        {
            if(req.Y() == 0) {
                resp.SetCode(2); // 2 就是mod 0
            }
            else{
                resp.SetResult(req.X() % req.Y());
            }
        }
            break;
        default:
            resp.SetCode(3); // 3 表示用户发来的计算类型 无法识别
            break;
        }
        return resp;
    }
    ~Calculator()
    {}
};
